easy, one minutes i solve the problem9 {" m2 h4 z6 _& O; K0 V) [
divide into half, mean 6/ 6
/ X3 @" D5 ~; itvb now,tvbnow,bttvbtake the heavier 6 ping pong5.39.217.767 W: z' @$ ~+ F8 o: e/ g* w& T
divide into 3/3, take the heavier 3& c) x) ~+ R* g8 d0 S
take the the other 3 that have the equal weight, switch each to measure, the most important things is labeling the ping pong so that we can recognize |
發表於 2009-2-8 08:11 PM
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